IL83399A - Secure trunked radio communications system - Google Patents

Secure trunked radio communications system

Info

Publication number
IL83399A
IL83399A IL83399A IL8339987A IL83399A IL 83399 A IL83399 A IL 83399A IL 83399 A IL83399 A IL 83399A IL 8339987 A IL8339987 A IL 8339987A IL 83399 A IL83399 A IL 83399A
Authority
IL
Israel
Prior art keywords
secure
communications system
radio communications
trunked radio
trunked
Prior art date
Application number
IL83399A
Original Assignee
Motorola Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Motorola Inc filed Critical Motorola Inc
Publication of IL83399A publication Critical patent/IL83399A/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
    • H04K1/00—Secret communication

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Telephonic Communication Services (AREA)
IL83399A 1986-10-31 1987-07-31 Secure trunked radio communications system IL83399A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/926,311 US4882751A (en) 1986-10-31 1986-10-31 Secure trunked communications system

Publications (1)

Publication Number Publication Date
IL83399A true IL83399A (en) 1991-11-21

Family

ID=25453041

Family Applications (1)

Application Number Title Priority Date Filing Date
IL83399A IL83399A (en) 1986-10-31 1987-07-31 Secure trunked radio communications system

Country Status (3)

Country Link
US (1) US4882751A (en)
CA (1) CA1275446C (en)
IL (1) IL83399A (en)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5241124A (en) * 1990-04-18 1993-08-31 Yamaha Corporation Electronic musical instrument capable of controlling touch response based on a reference value
US5054068A (en) * 1990-05-07 1991-10-01 Motorola, Inc. Trunked radio communication system having encrypted system control information
EP0464562B1 (en) * 1990-06-29 1997-04-23 Digital Equipment Corporation Method and apparatus for decryption of an information packet having a format subject to modification
US5235644A (en) * 1990-06-29 1993-08-10 Digital Equipment Corporation Probabilistic cryptographic processing method
US5404403A (en) * 1990-09-17 1995-04-04 Motorola, Inc. Key management in encryption systems
US5146498A (en) * 1991-01-10 1992-09-08 Motorola, Inc. Remote key manipulations for over-the-air re-keying
US5150408A (en) * 1991-02-27 1992-09-22 Motorola, Inc. Key distribution communication system
US5164986A (en) * 1991-02-27 1992-11-17 Motorola, Inc. Formation of rekey messages in a communication system
US5185795A (en) * 1991-02-27 1993-02-09 Motorola, Inc. Authentication of rekey messages in a communication system
US5146497A (en) * 1991-02-27 1992-09-08 Motorola, Inc. Group rekey in a communication system
US5185797A (en) * 1991-03-27 1993-02-09 Motorola, Inc. Encrypted trunked control channel system
US5754961A (en) 1994-06-20 1998-05-19 Kabushiki Kaisha Toshiba Radio communication system including SDL having transmission rate of relatively high speed
DE4444089C2 (en) * 1994-12-10 1998-09-17 Rohde & Schwarz Transceiver terminal for a communication system
US5960362A (en) * 1996-06-24 1999-09-28 Qualcomm Incorporated Method and apparatus for access regulation and system protection of a dispatch system
US5960066A (en) * 1996-11-07 1999-09-28 Lucent Technologies, Inc. Method and apparatus for using telephone house wiring for voice/data network
US6097817A (en) * 1997-12-10 2000-08-01 Omnipoint Corporation Encryption and decryption in communication system with wireless trunk
US6580906B2 (en) 1997-12-10 2003-06-17 Intel Corporation Authentication and security in wireless communication system
US6381250B1 (en) 1998-01-23 2002-04-30 Innovative Communications Technologies, Inc. Capacity allocation system using semi-autonomous network elements to implement and control a transmission schedule
US6426959B1 (en) 1998-01-20 2002-07-30 Innovative Communications Technologies, Inc. System and method for facilitating component management in a multiple vendor satellite communications network
US6701363B1 (en) * 2000-02-29 2004-03-02 International Business Machines Corporation Method, computer program product, and system for deriving web transaction performance metrics
GB2418320B (en) * 2004-09-15 2007-09-19 Motorola Inc A communication system and method of call group management therefor
US20060211450A1 (en) * 2005-03-18 2006-09-21 Niekerk Sabine V Method and apparatus for controlling push-to-talk functions of a mobile communication unit from a unit circuit card
US8930182B2 (en) * 2011-03-17 2015-01-06 International Business Machines Corporation Voice transformation with encoded information

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3995225A (en) * 1975-11-13 1976-11-30 Motorola, Inc. Synchronous, non return to zero bit stream detector
US4012597A (en) * 1975-11-24 1977-03-15 Motorola, Inc. Transmission trunk multichannel dispatch system with priority queuing
US4167700A (en) * 1977-05-02 1979-09-11 Motorola, Inc. Digital voice protection system and method
US4176321A (en) * 1977-09-02 1979-11-27 Motorola, Inc. Delta modulation detector
US4174502A (en) * 1978-10-16 1979-11-13 Motorola, Inc. Delta modulated digital signal detector
US4197502A (en) * 1978-10-16 1980-04-08 Motorola, Inc. Digital signal detector
US4411017A (en) * 1980-03-14 1983-10-18 Harris Corporation Secure mobile telephone system
US4555805A (en) * 1980-03-14 1985-11-26 Harris Corporation Secure mobile telephone system
US4440976A (en) * 1981-06-17 1984-04-03 Motorola, Inc. Automatic selection of decryption key for multiple-key encryption systems
US4553262A (en) * 1983-11-25 1985-11-12 Motorola, Inc. Communications system enabling radio link access for non-trunked radio units to a multifrequency trunked two-way communications systems
US4573207A (en) * 1983-12-22 1986-02-25 Motorola, Inc. Queued community repeater communications system
US4672601A (en) * 1984-12-06 1987-06-09 Motorola, Inc. Duplex interconnect/dispatch trunked radio system
KR880700558A (en) * 1984-12-31 1988-03-15 빈센트 죠셉 로너 Outgoing relay radio system, single / dual word signaling device and outgoing relay communication system control method.
US4649567A (en) * 1985-04-22 1987-03-10 General Electric Company Dispatch overdialing for inter-group and other added calling/called access to communications channels in a trunked radio communications system

Also Published As

Publication number Publication date
US4882751A (en) 1989-11-21
CA1275446C (en) 1990-10-23

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